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<head><meta charset="utf-8"><title>weekly meeting 2019.05.07 · wg-async-foundations · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/index.html">wg-async-foundations</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html">weekly meeting 2019.05.07</a></h3>

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<a name="165090050"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090050" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090050">(May 07 2019 at 17:01)</a>:</h4>
<p>o/ <span class="user-group-mention" data-user-group-id="1172">@WG-async-await</span></p>



<a name="165090060"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090060" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090060">(May 07 2019 at 17:01)</a>:</h4>
<p>o/</p>



<a name="165090133"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090133" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090133">(May 07 2019 at 17:02)</a>:</h4>
<p>This last week we had a few issues due to the argument desugaring change to fix drop order. I think the last of those are covered by <a href="https://github.com/rust-lang/rust/pull/60535" target="_blank" title="https://github.com/rust-lang/rust/pull/60535">https://github.com/rust-lang/rust/pull/60535</a></p>



<a name="165090179"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090179" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090179">(May 07 2019 at 17:03)</a>:</h4>
<p><span class="user-mention" data-user-id="116107">@davidtwco</span> have you had a chance to finish reviewing it? I saw you and <span class="user-mention" data-user-id="119009">@eddyb</span> discussing some additional changes you wanted to make</p>



<a name="165090184"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090184" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> davidtwco <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090184">(May 07 2019 at 17:03)</a>:</h4>
<p>Here's a quick update on my <a class="stream" data-stream-id="187312" href="/#narrow/stream/187312-t-compiler.2Fwg-async-await">#t-compiler/wg-async-await</a> things from the last week:</p>
<ul>
<li>The "fix" for drop orders (<a href="https://github.com/rust-lang/rust/issues/60437" target="_blank" title="https://github.com/rust-lang/rust/issues/60437">#60437</a>) landed and broke things, I opened <a href="https://github.com/rust-lang/rust/issues/60527" target="_blank" title="https://github.com/rust-lang/rust/issues/60527">#60527</a> (landed) to resolve part of the fallout and <span class="user-mention" data-user-id="213313">@Taiki Endo</span> was kind enough to resolve the rest with <a href="https://github.com/rust-lang/rust/issues/60501" target="_blank" title="https://github.com/rust-lang/rust/issues/60501">#60501</a> (landed) and <a href="https://github.com/rust-lang/rust/issues/60535" target="_blank" title="https://github.com/rust-lang/rust/issues/60535">#60535</a> (awaiting review).</li>
<li>I assigned myself <a href="https://github.com/rust-lang/rust/issues/54326" target="_blank" title="https://github.com/rust-lang/rust/issues/54326">#54326</a> and then started working on the suggested approach from eddy, which resulted in <a href="https://github.com/rust-lang/rust/issues/60592" target="_blank" title="https://github.com/rust-lang/rust/issues/60592">#60592</a> that landed ~20 minutes ago. That fixed the problem for trivial generator errors but the errors for <code>async fn</code> turned out to be a bit more complicated, <a href="#narrow/stream/187312-t-compiler.2Fwg-async-await/topic/mismatched.20types.20diag.20.2354326/near/165075226" title="#narrow/stream/187312-t-compiler.2Fwg-async-await/topic/mismatched.20types.20diag.20.2354326/near/165075226">eddy wrote up why in this topic</a> so I hope to try tackle that next, whatever it ends up being.</li>
</ul>



<a name="165090191"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090191" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090191">(May 07 2019 at 17:03)</a>:</h4>
<p>(moving <code>construct_async_arguments</code> to lowering rather than parsing)</p>



<a name="165090220"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090220" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> davidtwco <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090220">(May 07 2019 at 17:03)</a>:</h4>
<blockquote>
<p><span class="user-mention silent" data-user-id="116107">davidtwco</span> have you had a chance to finish reviewing it? I saw you and <span class="user-mention silent" data-user-id="119009">eddyb</span> discussing some additional changes you wanted to make</p>
</blockquote>
<p>I think that was a longer-term idea. We should land it w/out that. It looks good to me.</p>



<a name="165090228"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090228" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090228">(May 07 2019 at 17:03)</a>:</h4>
<p><span class="user-mention" data-user-id="127859">@Taylor Cramer</span> <span class="user-mention" data-user-id="116009">@nikomatsakis</span>   One thing that was done with the const-generics effort was to make a public call for tests; I think it would be good to do that here also particularly as I feel they are lacking and because it is more time sensitive</p>



<a name="165090295"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090295" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090295">(May 07 2019 at 17:04)</a>:</h4>
<p><span class="user-mention" data-user-id="116107">@davidtwco</span> Okay, thanks for the update-- I'll r+ then</p>



<a name="165090350"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090350" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090350">(May 07 2019 at 17:05)</a>:</h4>
<p><span class="user-mention" data-user-id="126931">@centril</span> What is the process you were imagining around that (esp. around getting diverse tests, rather than a lot of code that tests the same interaction of a few features)</p>



<a name="165090371"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090371" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090371">(May 07 2019 at 17:05)</a>:</h4>
<p>e.g. having argument-position impl trait tests, things returning trait objects, etc. would've been helpful</p>



<a name="165090422"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090422" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090422">(May 07 2019 at 17:06)</a>:</h4>
<p><span class="user-mention" data-user-id="127859">@Taylor Cramer</span> The WG would filter out duplicates; but variations of the same is a good thing</p>



<a name="165090425"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090425" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090425">(May 07 2019 at 17:06)</a>:</h4>
<p>but those are less likely to appear in a random test suite unless it occurs to someone to check that</p>



<a name="165090429"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090429" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090429">(May 07 2019 at 17:06)</a>:</h4>
<p>redundancy in testing is essential</p>



<a name="165090445"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090445" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090445">(May 07 2019 at 17:06)</a>:</h4>
<p>maybe ask folks to think of exotic things</p>



<a name="165090457"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090457" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090457">(May 07 2019 at 17:06)</a>:</h4>
<p>hm, I'm not sure I agree that more tests is necessarily better, but I think it isn't harmful in this case since we're drawing close to release time</p>



<a name="165090464"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090464" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090464">(May 07 2019 at 17:06)</a>:</h4>
<p>and write tests for combinatorial interactions</p>



<a name="165090470"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090470" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090470">(May 07 2019 at 17:06)</a>:</h4>
<p>(like, I would've pushed back against it while we were still on the old syntax e.g.)</p>



<a name="165090494"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090494" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090494">(May 07 2019 at 17:07)</a>:</h4>
<p><span class="user-mention" data-user-id="127859">@Taylor Cramer</span> it's all about covering much of the search space and doing good input space partitioning</p>



<a name="165090497"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090497" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090497">(May 07 2019 at 17:07)</a>:</h4>
<p>But okay, that sounds like a good idea-- did you want to try and solicit internals + reddit?</p>



<a name="165090582"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090582" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090582">(May 07 2019 at 17:08)</a>:</h4>
<p>I was thinking that if Niko did it on e.g. their blog post it would be most effective that way</p>



<a name="165090603"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090603" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090603">(May 07 2019 at 17:08)</a>:</h4>
<p>I think it's a great idea, but I think there is some amount of "legwork"</p>



<a name="165090607"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090607" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090607">(May 07 2019 at 17:08)</a>:</h4>
<p>i.e., putting out the call for tests</p>



<a name="165090611"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090611" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> davidtwco <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090611">(May 07 2019 at 17:08)</a>:</h4>
<p>I forget whether we did something similar with NLL.</p>



<a name="165090613"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090613" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090613">(May 07 2019 at 17:08)</a>:</h4>
<p>and trying to "structure" it</p>



<a name="165090625"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090625" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090625">(May 07 2019 at 17:09)</a>:</h4>
<p>oh sure; ultimately we need the tests tho <span aria-label="slight smile" class="emoji emoji-1f642" role="img" title="slight smile">:slight_smile:</span></p>



<a name="165090650"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090650" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090650">(May 07 2019 at 17:09)</a>:</h4>
<p>well, what I mean is, don't you want to do that as part of the call? Or are you just imaging people saying "send me all your tests and centril will sort them"</p>



<a name="165090658"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090658" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090658">(May 07 2019 at 17:09)</a>:</h4>
<p>I was sort of imagining making a list of features and people could sign themselves up</p>



<a name="165090672"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090672" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090672">(May 07 2019 at 17:09)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> ah I see what you mean</p>



<a name="165090685"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090685" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090685">(May 07 2019 at 17:09)</a>:</h4>
<p>I think <span class="user-mention" data-user-id="126931">@centril</span> is making the good point that we wouldn't necessarily know all hte features to ask for people to test</p>



<a name="165090692"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090692" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090692">(May 07 2019 at 17:09)</a>:</h4>
<p>"quest issue" style</p>



<a name="165090749"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090749" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090749">(May 07 2019 at 17:10)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> so I think both are valuable</p>



<a name="165090767"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090767" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090767">(May 07 2019 at 17:10)</a>:</h4>
<p>indeed, and I agree with <span class="user-mention" data-user-id="126931">@centril</span>'s point that sometimes it's "random variations" that find the most bugs</p>



<a name="165090776"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090776" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090776">(May 07 2019 at 17:10)</a>:</h4>
<p>i.e. make a list but also ask for creative tests for unexpected things</p>



<a name="165090804"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090804" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090804">(May 07 2019 at 17:10)</a>:</h4>
<p>I guess I'm mostly saying "I'm feeling pressed for time as is and hadn't necessarily planned on more blog posts" :) but if you want me to write something brief, perhaps linking over to an internals thread or something, I'd be happy to do so</p>



<a name="165090829"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090829" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090829">(May 07 2019 at 17:11)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> that would be great</p>



<a name="165090847"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090847" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090847">(May 07 2019 at 17:11)</a>:</h4>
<p>I also think this deserves prioritization so if other things (e.g. chalk) need to be deprioritized then so be it <span aria-label="slight smile" class="emoji emoji-1f642" role="img" title="slight smile">:slight_smile:</span></p>



<a name="165090942"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090942" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090942">(May 07 2019 at 17:12)</a>:</h4>
<p>Probably so</p>



<a name="165090950"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090950" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090950">(May 07 2019 at 17:12)</a>:</h4>
<p>Okay, sounds like we have a plan there, then?</p>



<a name="165090957"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090957" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090957">(May 07 2019 at 17:12)</a>:</h4>
<p>One question is: <span class="user-mention" data-user-id="126931">@centril</span> will you (or someone) create an internals thread first that I can link to?</p>



<a name="165090958"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090958" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090958">(May 07 2019 at 17:12)</a>:</h4>
<p>(although perhaps it should wait until the new syntax PR lands so folks can provide tests that match the behavior there?)</p>



<a name="165090979"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090979" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090979">(May 07 2019 at 17:13)</a>:</h4>
<p>ah, probably</p>



<a name="165090986"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090986" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090986">(May 07 2019 at 17:13)</a>:</h4>
<p><span class="user-mention" data-user-id="127859">@Taylor Cramer</span> sure; how much time do you expect that will take?</p>



<a name="165090993"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090993" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090993">(May 07 2019 at 17:13)</a>:</h4>
<p>I suppose this also couples as a way to "try out" the new syntax</p>



<a name="165090996"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165090996" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165090996">(May 07 2019 at 17:13)</a>:</h4>
<p>the PR seems pretty solid aside from some minor things</p>



<a name="165091003"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091003" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> davidtwco <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091003">(May 07 2019 at 17:13)</a>:</h4>
<p>Is there a PR up for the new syntax?</p>



<a name="165091017"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091017" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091017">(May 07 2019 at 17:14)</a>:</h4>
<p><span class="user-mention" data-user-id="116107">@davidtwco</span> <a href="https://github.com/rust-lang/rust/pull/60586" target="_blank" title="https://github.com/rust-lang/rust/pull/60586">https://github.com/rust-lang/rust/pull/60586</a></p>



<a name="165091063"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091063" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> davidtwco <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091063">(May 07 2019 at 17:14)</a>:</h4>
<p>Thanks, must have missed that.</p>



<a name="165091072"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091072" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091072">(May 07 2019 at 17:14)</a>:</h4>
<p><span class="user-mention" data-user-id="126931">@centril</span> An hour today for me to fix up the issues and run tests locally then however long additionally it takes to get through the queue</p>



<a name="165091082"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091082" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091082">(May 07 2019 at 17:14)</a>:</h4>
<p>plus whatever delay until the next nightly</p>



<a name="165091093"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091093" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091093">(May 07 2019 at 17:14)</a>:</h4>
<p><span class="user-mention" data-user-id="127859">@Taylor Cramer</span>  how about <code>@bors p=50</code> ;)</p>



<a name="165091114"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091114" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091114">(May 07 2019 at 17:15)</a>:</h4>
<p>lol</p>



<a name="165091154"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091154" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091154">(May 07 2019 at 17:15)</a>:</h4>
<p>I'd be ok w/ p=1</p>



<a name="165091210"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091210" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091210">(May 07 2019 at 17:16)</a>:</h4>
<p>on the premise of "trying to hit release targets, wanting as much time as possible for things to shake out"</p>



<a name="165091214"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091214" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091214">(May 07 2019 at 17:16)</a>:</h4>
<p><span class="user-mention" data-user-id="116107">@davidtwco</span> I forgot to ask-- would the expected return type issues you were discussing w/ <span class="user-mention" data-user-id="119009">@eddyb</span> also fix the issue where returning a trait object doesn't coerce properly?</p>



<a name="165091225"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091225" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091225">(May 07 2019 at 17:16)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span>  It's practically the same; if we have something super urgent we will just p=1000 that thing or something ^^</p>



<a name="165091234"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091234" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091234">(May 07 2019 at 17:16)</a>:</h4>
<p>I would've guessed it would, but perhaps I should open an issue to ensure there's a test if there isn't already an existing issue</p>



<a name="165091241"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091241" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> davidtwco <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091241">(May 07 2019 at 17:16)</a>:</h4>
<blockquote>
<p><span class="user-mention silent" data-user-id="116107">davidtwco</span> I forgot to ask-- would the expected return type issues you were discussing w/ <span class="user-mention silent" data-user-id="119009">eddyb</span> also fix the issue where returning a trait object doesn't coerce properly?</p>
</blockquote>
<p>I'm not sure, I don't have a good understanding of what's going on there yet, just that it's terrifying.</p>



<a name="165091244"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091244" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091244">(May 07 2019 at 17:16)</a>:</h4>
<p>I have no idea what the trait object thing is</p>



<a name="165091275"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091275" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091275">(May 07 2019 at 17:17)</a>:</h4>
<p>but since coercion is involved, I would expect not</p>



<a name="165091277"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091277" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091277">(May 07 2019 at 17:17)</a>:</h4>
<p>Oh, was this the <a href="https://github.com/rust-lang/rust/issues/54326" target="_blank" title="https://github.com/rust-lang/rust/issues/54326">#54326</a> questions?</p>



<a name="165091281"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091281" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091281">(May 07 2019 at 17:17)</a>:</h4>
<p>I saw that ping but didn't understand it yet</p>



<a name="165091284"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091284" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091284">(May 07 2019 at 17:17)</a>:</h4>
<p>like, we can only improve the situation in cases where we can be sure coercions can't happen :P</p>



<a name="165091285"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091285" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091285">(May 07 2019 at 17:17)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> ah; so your thinking was that I'd write up some list of features on internals or will you do that?</p>



<a name="165091286"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091286" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091286">(May 07 2019 at 17:17)</a>:</h4>
<p><span class="user-mention" data-user-id="119009">@eddyb</span> this thing: <code>async fn foo() -&gt; Box&lt;dyn Foo&gt; { Box::new(SomeFoo) }</code> doesn't coerce</p>



<a name="165091291"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091291" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> davidtwco <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091291">(May 07 2019 at 17:17)</a>:</h4>
<p>trait object thing being <a href="https://github.com/rust-lang/rust/issues/60424" target="_blank" title="https://github.com/rust-lang/rust/issues/60424">#60424</a>?</p>



<a name="165091295"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091295" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091295">(May 07 2019 at 17:17)</a>:</h4>
<p>oh actually, nevermind, we would fix that</p>



<a name="165091320"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091320" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091320">(May 07 2019 at 17:18)</a>:</h4>
<blockquote>
<p>ah; so your thinking was that I'd write up some list of features on internals or will you do that?</p>
</blockquote>
<p>I'd like to clarify who will do it, I suppose :)</p>



<a name="165091366"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091366" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091366">(May 07 2019 at 17:18)</a>:</h4>
<p><span class="user-mention" data-user-id="116107">@davidtwco</span> yup, thanks for the issue pointer, I couldn't remember where it was</p>



<a name="165091383"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091383" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091383">(May 07 2019 at 17:18)</a>:</h4>
<p>right, because the non-coercion return is that of the "future from generator" wrapper expression</p>



<a name="165091390"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091390" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091390">(May 07 2019 at 17:18)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> How about we iterate on it together?</p>



<a name="165091465"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091465" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091465">(May 07 2019 at 17:19)</a>:</h4>
<p>the drop order stuff came up before, sorry I didn't reply in time, didn't realize this was a meeting</p>
<p>the gist of it is that I'm working on killing <code>Res::Upvar</code> so that the logic can be cleaned up a bit and not require the entire frontend to know about the transformation</p>



<a name="165091482"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091482" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091482">(May 07 2019 at 17:19)</a>:</h4>
<p>but that cleanup doesn't need to block anything</p>



<a name="165091610"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091610" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091610">(May 07 2019 at 17:20)</a>:</h4>
<p>Okay- aside from the syntax PR, I think the only remaining issue is the multiple lifetimes one and <span class="user-mention" data-user-id="116883">@tmandry</span>'s stuff</p>



<a name="165091632"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091632" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091632">(May 07 2019 at 17:20)</a>:</h4>
<p>I've been looking at the resolve code to try and figure out how to insert the <code>in</code> constraints <span class="user-mention" data-user-id="116009">@nikomatsakis</span> described</p>



<a name="165091638"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091638" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091638">(May 07 2019 at 17:20)</a>:</h4>
<p><span class="user-mention" data-user-id="127859">@Taylor Cramer</span> I'm pretty excited about your syntax PR for a different reason: it simplifies the work to preallocate lang_items in lowering so we don't refer to things by path.</p>



<a name="165091644"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091644" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091644">(May 07 2019 at 17:21)</a>:</h4>
<p>I'll admit I'm finding that codebase a bit daunting</p>



<a name="165091680"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091680" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091680">(May 07 2019 at 17:21)</a>:</h4>
<p><span class="user-mention" data-user-id="126931">@centril</span> yeah I saw that-- I'm interested to see how that goes</p>



<a name="165091699"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091699" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091699">(May 07 2019 at 17:21)</a>:</h4>
<p><span class="user-mention" data-user-id="127859">@Taylor Cramer</span> I'm gonna do some exploration <span aria-label="slight smile" class="emoji emoji-1f642" role="img" title="slight smile">:slight_smile:</span></p>



<a name="165091703"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091703" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091703">(May 07 2019 at 17:21)</a>:</h4>
<p>In particular, curious about the no-std vs. with-std handling</p>



<a name="165091781"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091781" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091781">(May 07 2019 at 17:22)</a>:</h4>
<p><span class="user-mention" data-user-id="116883">@tmandry</span> do you have any updates? it seems like you and <span class="user-mention" data-user-id="116466">@Zoxc</span> have been having quite a bit of back-and-forth</p>



<a name="165091823"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091823" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091823">(May 07 2019 at 17:23)</a>:</h4>
<p><span class="user-mention" data-user-id="127859">@Taylor Cramer</span> also, before we do any requests for tests, it would be good if we move the tests to their own folder</p>



<a name="165091832"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091832" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091832">(May 07 2019 at 17:23)</a>:</h4>
<p>so we get all new test PRs to there</p>



<a name="165091860"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091860" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> tmandry <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091860">(May 07 2019 at 17:23)</a>:</h4>
<p><span class="user-mention" data-user-id="127859">@Taylor Cramer</span> Yeah I need to do some revisions on the PR</p>



<a name="165091936"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091936" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> tmandry <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091936">(May 07 2019 at 17:24)</a>:</h4>
<p>I think <span class="user-mention" data-user-id="116466">@Zoxc</span> and I mostly agree actually</p>



<a name="165091962"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091962" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091962">(May 07 2019 at 17:24)</a>:</h4>
<p>well do you guys agree with <span class="user-mention" data-user-id="119009">@eddyb</span>  yet? :P</p>



<a name="165091985"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165091985" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> tmandry <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165091985">(May 07 2019 at 17:25)</a>:</h4>
<p>most of my collaboration in working on the PR was with <span class="user-mention" data-user-id="119009">@eddyb</span></p>



<a name="165092004"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165092004" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> tmandry <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165092004">(May 07 2019 at 17:25)</a>:</h4>
<p>a lot of the back-and-forth is because I didn't communicate any of that when I posted the PR</p>



<a name="165092038"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165092038" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> tmandry <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165092038">(May 07 2019 at 17:25)</a>:</h4>
<p>so, I'm taking care of that now :)</p>



<a name="165092125"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165092125" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> tmandry <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165092125">(May 07 2019 at 17:26)</a>:</h4>
<p>plus some changes that need to be made</p>



<a name="165092179"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165092179" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165092179">(May 07 2019 at 17:27)</a>:</h4>
<blockquote>
<p>I've been looking at the resolve code to try and figure out how to insert the <code>in</code> constraints <span class="user-mention silent" data-user-id="116009">nikomatsakis</span> described</p>
</blockquote>
<p><span class="user-mention" data-user-id="127859">@Taylor Cramer</span> I might be able to carve out time to try and do that, if needed.</p>



<a name="165092188"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165092188" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165092188">(May 07 2019 at 17:27)</a>:</h4>
<p><del>PSA: If anyone wants to r+ a PR in the next few minutes I'm making a rollup atm</del> rollup was made.</p>



<a name="165092320"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165092320" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165092320">(May 07 2019 at 17:29)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> okay-- I'll keep trying, but so far I've gotten as far as "add a field with a mapping from regions to region sets that they must be <code>in</code>" and then trying to figure out how to actually do anything with those has been beyond me. Probably I just need to gain familiarity with the rest of the lifetime inference code, but it's a bit hard to get started</p>



<a name="165092326"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165092326" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Taylor Cramer <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165092326">(May 07 2019 at 17:29)</a>:</h4>
<p>there's just a lot of stuff going on :)</p>



<a name="165092421"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165092421" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165092421">(May 07 2019 at 17:30)</a>:</h4>
<p>There...is</p>



<a name="165092579"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165092579" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165092579">(May 07 2019 at 17:32)</a>:</h4>
<p>Have to run; <span aria-label="wave" class="emoji emoji-1f44b" role="img" title="wave">:wave:</span></p>



<a name="165092670"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165092670" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> repjarms <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165092670">(May 07 2019 at 17:33)</a>:</h4>
<p>Hey guys, I wanted to post on the back end of the meeting here and just say that I am interested in helping out however I can. With the caveat that I'm a new contributor and so there's a start up penalty to my effectiveness currently :)</p>



<a name="165092998"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165092998" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> tmandry <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165092998">(May 07 2019 at 17:37)</a>:</h4>
<blockquote>
<p>plus some changes that need to be made</p>
</blockquote>
<p>actually <span class="user-mention" data-user-id="116466">@Zoxc</span> had a better intuition for how to structure this than I did, I'm going to go with their approach and move some logic into the layout computation</p>



<a name="165097062"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165097062" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> repjarms <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165097062">(May 07 2019 at 18:22)</a>:</h4>
<p><span class="user-mention" data-user-id="126931">@centril</span> Id be interested in helping out with test coverage in the ensuing call for tests. That should help me get up to speed on the logic with the feature too</p>



<a name="165097121"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165097121" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165097121">(May 07 2019 at 18:23)</a>:</h4>
<p><span class="user-mention" data-user-id="219509">@repjarms</span> that would be sweet <span aria-label="slight smile" class="emoji emoji-1f642" role="img" title="slight smile">:slight_smile:</span></p>



<a name="165097399"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/187312-wg-async-foundations/topic/weekly%20meeting%202019.05.07/near/165097399" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/187312-wg-async-foundations/topic/weekly.20meeting.202019.2E05.2E07.html#165097399">(May 07 2019 at 18:26)</a>:</h4>
<p>Ah, great</p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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